It is very important about that. You need to try to stay away from foods that are high in potassium and phosphorus. Your dietitian should be able to give you a list of foods and the amount of potassium and phosphorus. Me personally, I take my binders constantly when I eat things with high potassium or phosphorus. Binders help alittle bit to bind some of the toxins together to help push them out of your body through your bowel wastes. Ask about binders to your dietitian.